New links for Advanced Hydrologic Prediction Service pages

Uniform Resource Locator (URL) changes have been implemented for the Advanced Hydrologic Prediction Service (AHPS) web pages. Bookmarked pages will be automatically redirected to the new URLs. Please update your bookmarks when redirected.

New Changes to our AHPS pages include:

More frequent updates to hydrograph pages. Updates should now be available approximately every 15 minutes

Improved river gage map displays

Specifically, the following changes have been made:

National River Conditions Point Map:

old url: http://www.weather.gov/ahps

new url: http://water.weather.gov

National Precipitation Analysis Map:

old url: http://water.weather.gov

new url: http://water.weather.gov/precip

National Precipitation Analysis Download Directory:

old url: http://water.weather.gov/p_download_new/

new url: http://water.weather.gov/precip/p_download_new/

National Precipitation Analysis-One Day

old url: http://water.weather.gov/p_download_new/2010/201003/nws_precip_20100304.tar.gz

new url: http://water.weather.gov/precip/p_download_new/YYYY/M/D/nws_precip_1day_observed_shape_YYYYMMDD.tar.gz

new url: http://water.weather.gov/precip/p_download_new/2010/3/4/nws_precip_1day_observed_shape_20100304.tar.gz

In the above examples, zzz is the NWS forecast office identifier and yyyyy is the NWS location identifier for a point along a river or stream.

Other pages follow the pattern in the examples above where the domain name immediately following http:// is replaced with the new domain name water.weather.gov.

These changes have been made in conjunction with infrastructure changes to increase the reliability for the NWS web-based hydrologic services.

These URL changes will not affect users who access NWS web-based hydrologic services through the tabs on the NWS main page at http://www.weather.gov. Users who access either the National River Conditions Point Map or other AHPS pages through bookmarks will be automatically redirected to the new URLs and can update their bookmarks after the redirection.

Users who currently bookmark the national precipitation map at water.weather.gov will be directed to the AHPS main page. The National Precipitation Map will be accessible from a tab on the main page and the bookmark can be updated at that time.

Users who automatically interrogate the NWS Hydrologic Services Web Pages to obtain hydrologic forecasts and data will have to change the URL in their procedures so they access the correct web location.